Cisco Systems OL-6256-17 manual Rear MSC View of Line Card Chassis-Fixed Configuration Shown

Chapter 1 Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Overview

Chassis Components

Figure 1-5shows the rear view of a Cisco CRS 8-slot line card chassis with a fixed configuration AC power system installed.

Figure 1-5 Rear (MSC) View of Line Card Chassis—Fixed Configuration Shown

1

2

3

4

5

			122776
	6		7
1	Upper fan tray (beneath cover)	5	Lower fan tray
2	Chassis vertical mounting brackets	6	Rear exhaust screen
3	Switch fabric card (half-height) slots	7	Power system
4	MSC slots

The Cisco CRS 8-slot line card chassis contains:

•As many as eightMSC, FP or LSP cards (all types are also called line cards), and eightPLIMs. The line card and PLIM are an associated pair of cards that mate through the chassis midplane. The line card provides the forwarding engine for Layer 3 routing of user data, and the PLIM provides the physical interface and connectors for the user data. The line card can be associated with several different PLIMs, which provide different interface speeds and technologies.

Note For a complete list of line cards, route processors, SPAs and SIPs, and interface modules supported in the Cisco CRS 8-slot line card chassis, go to the Cisco Carrier Routing System Data Sheets at: http://www.cisco.com/en/US/products/ps5763/products_data_sheets_list.html.

Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide

OL-6256-17 1-7